1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.mtp; 18 19 import java.util.ArrayList; 20 import java.util.List; 21 22 /** 23 * Encapsulates the ObjectPropList dataset used by the GetObjectPropList command. 24 * The fields of this class are read by JNI code in android_media_MtpDatabase.cpp 25 */ 26 27 class MtpPropertyList { 28 29 // list of object handles (first field in quadruplet) 30 private List<Integer> mObjectHandles; 31 // list of object property codes (second field in quadruplet) 32 private List<Integer> mPropertyCodes; 33 // list of data type codes (third field in quadruplet) 34 private List<Integer> mDataTypes; 35 // list of long int property values (fourth field in quadruplet, when value is integer type) 36 private List<Long> mLongValues; 37 // list of long int property values (fourth field in quadruplet, when value is string type) 38 private List<String> mStringValues; 39 40 // Return value of this operation 41 private int mCode; 42 MtpPropertyList(int code)43 public MtpPropertyList(int code) { 44 mCode = code; 45 mObjectHandles = new ArrayList<>(); 46 mPropertyCodes = new ArrayList<>(); 47 mDataTypes = new ArrayList<>(); 48 mLongValues = new ArrayList<>(); 49 mStringValues = new ArrayList<>(); 50 } 51 append(int handle, int property, int type, long value)52 public void append(int handle, int property, int type, long value) { 53 mObjectHandles.add(handle); 54 mPropertyCodes.add(property); 55 mDataTypes.add(type); 56 mLongValues.add(value); 57 mStringValues.add(null); 58 } 59 append(int handle, int property, String value)60 public void append(int handle, int property, String value) { 61 mObjectHandles.add(handle); 62 mPropertyCodes.add(property); 63 mDataTypes.add(MtpConstants.TYPE_STR); 64 mStringValues.add(value); 65 mLongValues.add(0L); 66 } 67 getCode()68 public int getCode() { 69 return mCode; 70 } 71 getCount()72 public int getCount() { 73 return mObjectHandles.size(); 74 } 75 getObjectHandles()76 public int[] getObjectHandles() { 77 return mObjectHandles.stream().mapToInt(Integer::intValue).toArray(); 78 } 79 getPropertyCodes()80 public int[] getPropertyCodes() { 81 return mPropertyCodes.stream().mapToInt(Integer::intValue).toArray(); 82 } 83 getDataTypes()84 public int[] getDataTypes() { 85 return mDataTypes.stream().mapToInt(Integer::intValue).toArray(); 86 } 87 getLongValues()88 public long[] getLongValues() { 89 return mLongValues.stream().mapToLong(Long::longValue).toArray(); 90 } 91 getStringValues()92 public String[] getStringValues() { 93 return mStringValues.toArray(new String[0]); 94 } 95 } 96